Best Catted DP for my setup

Scorp10 · 11-25-2022, 02:52 PM

Hey everyone,

Looking for some feedback regarding a catted DP for my 340i. I've read various posts where some say a catted does not make much difference in sound and performance, and some say they make a huge improvement. I am not stock, so not sure if that helps bring out some sound paired with the DP.

Currently I am running an M Perfomance Exhaust, Dinan Midpipe, and a Dinan CAI. I'd like to naturally increase the exhaust notes I get with my current setup (more MPPSK sounding) but not doing so with a burble tune as I feel like those sound too cheesy and fake.

Catless is also not an option as I can't stand the smell and I have a child I do not want to expose to those fumes. I've read higher end DP's like AA don't throw CELs but then some people still get them, while some get no CELs on the entry level models like VRSF & CTS.

Thanks for any feedback.

WolfGTI · 11-25-2022, 03:12 PM

3 years with my catted AA dp and no CEL, no other issues.

Quote:

Originally Posted by Scorp10

Hey everyone,

Looking for some feedback regarding a catted DP for my 340i. I've read various posts where some say a catted does not make much difference in sound and performance, and some say they make a huge improvement. I am not stock, so not sure if that helps bring out some sound paired with the DP.

Currently I am running an M Perfomance Exhaust, Dinan Midpipe, and a Dinan CAI. I'd like to naturally increase the exhaust notes I get with my current setup (more MPPSK sounding) but not doing so with a burble tune as I feel like those sound too cheesy and fake.

Catless is also not an option as I can't stand the smell and I have a child I do not want to expose to those fumes. I've read higher end DP's like AA don't throw CELs but then some people still get them, while some get no CELs on the entry level models like VRSF & CTS.

Thanks for any feedback.

Wires · 11-25-2022, 03:43 PM

DP does change the exhaust sound a lot. The OEM cat is a very high cell count which works as a "muffler" for the sound.

I've ran the ER catted DP for 3 years now, with no CEL. Smell is slight when idling in a garage, or windows down at a stop light and a tailwind. Ran the VRSF one, and got a CEL everyday and it's very large cat had a nasty exhaust note.

Scorp10 · 11-25-2022, 04:32 PM

Quote:

Originally Posted by Wires

DP does change the exhaust sound a lot. The OEM cat is a very high cell count which works as a "muffler" for the sound.

I've ran the ER catted DP for 3 years now, with no CEL. Smell is slight when idling in a garage, or windows down at a stop light and a tailwind. Ran the VRSF one, and got a CEL everyday and it's very large cat had a nasty exhaust note.

Hmm I just found the ER Catted DP for 35% off today. I may pull the trigger. Yours made a decent difference in sound?

Wires · 11-25-2022, 05:44 PM

Quote:

Originally Posted by Scorp10

Hmm I just found the ER Catted DP for 35% off today. I may pull the trigger. Yours made a decent difference in sound?

Yes, really nice refined tone. Highly recommend it, and at that price, even better!

G.Newt · 11-25-2022, 07:22 PM

AA or CG DS-1 catted downpipe the only 2 with no CEL.

disintegrator66 · 11-26-2022, 06:36 AM

Quote:

Originally Posted by G.Newt

AA or CG DS-1 catted downpipe the only 2 with no CEL.

Add HJS to your list....

https://hjs-motorsport.de/en/product...pes/90-82-2055

GA/\/\/\/\A_CT · 11-26-2022, 09:38 AM

2 years with AA catted DP. No check engine. Deeper exhaust note. Slightly more power.

mike@x-ph.com · 11-26-2022, 12:15 PM

No check engine light with the Active Autowerke downpipe.

B58 · 11-26-2022, 02:01 PM

I had CG 5" no CEL it was probably the best dp I had and I also had the ER catted, but that's more on the 4" side. As far as catless I always prefer the ER.

Scorp10 · 11-26-2022, 02:04 PM

Quote:

Originally Posted by B58

I had CG 5" no CEL it was probably the best dp I had and I also had the ER catted, but that's more on the 4" side. As far as catless I always prefer the ER.

How did you like the ER catted? Any CEL? And how'd it sound?

B58 · 11-26-2022, 04:59 PM

Quote:

Originally Posted by Scorp10

Quote:

Originally Posted by B58

I had CG 5" no CEL it was probably the best dp I had and I also had the ER catted, but that's more on the 4" side. As far as catless I always prefer the ER.

How did you like the ER catted? Any CEL? And how'd it sound?

We'll I was running it tuned so it would of never threw a code, but the CG was with a JB4 in the early B58 days and it never threw a code. I only switched to a catless when I installed a Pure 800 turbo.

mike@x-ph.com · 11-27-2022, 09:47 AM

Quote:

Originally Posted by Scorp10

How did you like the ER catted? Any CEL? And how'd it sound?

Evolution Racewerks is handbuilt in the US, and their finish quality and fitment are second to none.

Unfortunately, they do not use the highest quality cats; you are more likely to trigger the check engine light with this downpipe.

PeterWT · 11-27-2022, 09:50 AM

Another thumbs up for the AA catted. I got a good deal on mine from mike@x-ph.com .

mike@x-ph.com · 11-27-2022, 07:22 PM

Quote:

Originally Posted by PeterWT

Another thumbs up for the AA catted. I got a good deal on mine from mike@x-ph.com .

Thank you

Skyhigh · 11-28-2022, 03:33 AM

Very happy with Akrapovic. Detailed review and info here:

https://f30.bimmerpost.com/forums/sh....php?t=1691853

mike@x-ph.com · 11-28-2022, 08:38 AM

Quote:

Originally Posted by Skyhigh

Very happy with Akrapovic. Detailed review and info here:

https://f30.bimmerpost.com/forums/sh....php?t=1691853

it still has not triggered the CEL right?

Skyhigh · 11-28-2022, 10:47 AM

No, absolutely not. 2+ years with it now. Don't expect it to either, it's an HJS cat inside, as you know.

11-25-2022, 02:52 PM	#1
Scorp10 Private First Class 114 Rep 121 Posts Drives: 2017 340i xDrive (F30) Join Date: May 2020 Location: New England iTrader: (0)	Best Catted DP for my setup Hey everyone, Looking for some feedback regarding a catted DP for my 340i. I've read various posts where some say a catted does not make much difference in sound and performance, and some say they make a huge improvement. I am not stock, so not sure if that helps bring out some sound paired with the DP. Currently I am running an M Perfomance Exhaust, Dinan Midpipe, and a Dinan CAI. I'd like to naturally increase the exhaust notes I get with my current setup (more MPPSK sounding) but not doing so with a burble tune as I feel like those sound too cheesy and fake. Catless is also not an option as I can't stand the smell and I have a child I do not want to expose to those fumes. I've read higher end DP's like AA don't throw CELs but then some people still get them, while some get no CELs on the entry level models like VRSF & CTS. Thanks for any feedback. __________________ ?17 Black Sapphire Metallic 340i
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11-25-2022, 03:43 PM	#3
Wires Brigadier General 1646 Rep 4,876 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	DP does change the exhaust sound a lot. The OEM cat is a very high cell count which works as a "muffler" for the sound. I've ran the ER catted DP for 3 years now, with no CEL. Smell is slight when idling in a garage, or windows down at a stop light and a tailwind. Ran the VRSF one, and got a CEL everyday and it's very large cat had a nasty exhaust note.
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11-25-2022, 07:22 PM	#6
G.Newt Major 811 Rep 1,452 Posts Drives: CT4-V Blackwing 6MT Join Date: Feb 2017 Location: CO -> TX iTrader: (0)	AA or CG DS-1 catted downpipe the only 2 with no CEL. __________________ 2022 CT4-V Blackwing 6-speed SOLD: 2016 340i xDrive 6-speed DAW v2.5 turbo E40 \| Dorch S2 \| VRSF DP \| MST intake \| AWE catback \| 335is clutch \| CSF heat exchanger \| RK Autowerks intake manifold \| Orange M Perf Brake Kit \| KW Street Comfort coilovers \| GTS taillights V2
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11-26-2022, 09:38 AM	#8
GA/\/\/\/\A_CT Lieutenant 217 Rep 585 Posts Drives: ‘20 m340ix Join Date: Jan 2018 Location: CT iTrader: (0)	2 years with AA catted DP. No check engine. Deeper exhaust note. Slightly more power.
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11-26-2022, 12:15 PM	#9
mike@x-ph.com BimmerPost Supporting Vendor 24171 Rep 190,750 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	No check engine light with the Active Autowerke downpipe. __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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11-26-2022, 02:01 PM	#10
B58 Major 558 Rep 1,457 Posts Drives: 922 Turbo Join Date: May 2018 Location: USA iTrader: (1)	I had CG 5" no CEL it was probably the best dp I had and I also had the ER catted, but that's more on the 4" side. As far as catless I always prefer the ER.
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11-27-2022, 09:50 AM	#14
PeterWT Lieutenant 253 Rep 558 Posts Drives: '17 M240i, AT, BSM Join Date: Dec 2016 Location: Florida, USA iTrader: (0)	Another thumbs up for the AA catted. I got a good deal on mine from mike@x-ph.com . __________________ My 2017 M240i: MHD, xHP, Modded OE Intake, AA GESi 400 CPSI Cat DP, Dinan Mid-pipe, M Performance LSD & Rear Diffuser, BMS Exhaust Tips, Apex EC-7 Wheels, M-Tech Front Lip, iND Painted Mirror Caps, Smoked Reflectors
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11-28-2022, 03:33 AM	#16
Skyhigh Brigadier General 1882 Rep 3,867 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	Very happy with Akrapovic. Detailed review and info here: https://f30.bimmerpost.com/forums/sh....php?t=1691853 __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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11-28-2022, 10:47 AM	#18
Skyhigh Brigadier General 1882 Rep 3,867 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	No, absolutely not. 2+ years with it now. Don't expect it to either, it's an HJS cat inside, as you know. __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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